Method and system for controlling a wind turbine to manage edgewise blade vibrations

A method of controlling a wind turbine for the avoidance of edgewise vibrations. The method includes the steps of determining a whirling mode frequency of a rotor blade of the wind turbine; determining an avoidance zone based on the whirling mode frequency, the avoidance zone being a rotor speed ran...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Nielsen, Anders Steen, Bachmann, Thomas Hedegaard
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	A method of controlling a wind turbine for the avoidance of edgewise vibrations. The method includes the steps of determining a whirling mode frequency of a rotor blade of the wind turbine; determining an avoidance zone based on the whirling mode frequency, the avoidance zone being a rotor speed range; receiving a rotor speed setpoint; and either adjusting the rotor speed to a value outside the rotor speed range if the rotor speed setpoint is within the rotor speed range or adjusting the rotor speed to a value corresponding to the rotor speed setpoint if the rotor speed setpoint is outside the rotor speed range.